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Dab tsi yog helium balloon thiab dab tsi yog nws cov yam ntxwv?
Dab tsi yog helium balloon?Aluminium zaj duab xis balloons tseem hu ua aluminium foil balloons, hydrogen balloons thiab helium balloons nyob rau hauv Suav teb, thiab lub npe lus Askiv yog ua raws li balloon lossis mylaballoohelium balloon.Nws tuaj yeem muab faib ua lub hnub yug balloons, cov khoom ua si tas luav alumin ...Nyeem ntxiv -
Helium yog dav siv, Vim li cas siv helium balloons?
Hauv ntau lub sijhawm tom qab xyoo 80 thiab tom qab 90s thaum yau, hydrogen balloons yog qhov tseem ceeb.Tam sim no, cov duab ntawm hydrogen balloons tsis txwv rau cov qauv tas luav.Kuj tseem muaj ntau lub net liab pob tshab balloons dai kom zoo nkauj nrog lub teeb, uas yog nyiam los ntawm ntau cov tub ntxhais hluas.Howe...Nyeem ntxiv -
Helium Balloon Hits tawm lub tswvyim ntawm "Gold Gas"
Raws li lub xyoo tshiab los txog, cov yeeb yuj helium balloons tau npaj los tsim kom muaj qhov chaw zoo nkauj, uas yuav tsum tau nyiam heev nrog cov lag luam thiab cov neeg tuaj ncig tebchaws uasi.Txawm li cas los xij, raws li tsab ntawv tshaj tawm tshiab ntawm Xinhua News Agency, vim lub ntiaj teb helium mov tsis txaus, roj nqi ...Nyeem ntxiv
